In Vivo Biodistribution of No-Carrier-Added 6-<sup>18</sup>F-Fluoro-3,4-Dihydroxy-l-Phenylalanine (<sup>18</sup>F-DOPA), Produced by a New Nucleophilic Substitution Approach, Compared with Carrier-Added <sup>18</sup>F-DOPA, Prepared by Conventional Electrophilic SubstitutionWillem-Jan Kuik, Philip H. Elsinga, Adrienne H. Brouwers et al.|Journal of Nuclear Medicine|2014Cited by 66